Here is another piece of story that is not in the article. When Alexander tried to enter Afghanistan he was met with fierce resistance. Didn't matter what he did, he couldn't quench the uprisings and could not conquer the country. After losing a lot of men, he wrote to Aristotle for advise. Aristotle asked Alexander for a sample of Afghan soil to be shipped to him. Upon receipt of the soil samples, Aristotle laid the…
But that being said, it's also worth mentioning that that Bactria was one of the most prominent piece of Alexander's legacy, and Alexandria on the Oxus (the remains of which lies somewhere in the north of Afghanistan) was one of its primary cities: https://en.wikipedia.org/wiki/Ai-Khanoum
It seems that somehow things were settled and Afghanistan managed to become the heart of one of Alexander's remaining kingdoms: https://en.wikipedia.org/wiki/Greco-Bactrian_Kingdom
You can't really have such impressive results when there is little control under your hands!